Aerial tramway grip



E. H. SACKETT.

AERIAL TRAMWAY GRIP.

APPLICATION FILED MAR. 10. 1921' Q PX, Mm En EDWARD H. SACKETT, OF ARV'ADA, COLORADO.

PATENT-OFF ICE.

' AERIAL TRAMWAY GRIP.

T all whom it may concern:

e it known that I, EDWARD H. SAoKn'rT,

a citizen of the United States, residing at Arvada, county of Jefferson, and State of Colorado, have invented certain new and useful Improvements in Aerial Tramway Grips; and I do declare the followingto be a full, clear, and exact description of the invention, in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and tothe characters of reference marked thereon, which form av part of this specification.

The object of this invention is to provide a grip for aerial tramways which is capable of adjustment and may be positively operated and securely retained.

Briefly, the invention comprises a block or casing on which is mounted afixed jaw, and

in which a movable jaw slides, the movable jaw being adapted to be forced into clamplng engagement by means of a toggle connection operated by a handle, the toggle being adjustable by means of an eccentric mounting in order toengage cables of various sizes.

In the drawings:

Fig. 1 is a face view of the grip, as indicated by the arrow 1 of Fig. 2; i

Fig. 2 is a vertical section takenon the line 22 of Fig. 1.;

Fig. 3 is a cross section taken on line 33 of Fig. 2;

Fig. 4 is a sectional detail taken on the line 4 of Fig. 2; v Fig. 5 is a sectional detail taken on the line 55 of Fig. 1; and j Fig. 6 is a detail taken on the line 66 of Fig. 5, but showing the handle at the limit of its movement.

The grip is composed of a block or casing having two spaced arms '10 which comprise the sides of the block, the upper ends of said arms being connected by means of a head 12 and thelower ends of said arms at the rear thereof being connected by means of a web or back-plate 14 carrying a hub or boss 15 to co-operate with any suitable means for connecting with a bucket, such as abolt 16 and a plate 18. The forward portions of the two arms 10 are cut away, as indicated in Figures 2 and 3, to provide forwardly facing shoulders 20 and upwardly facing shoulders or ledges 22. A fixed jaw 24 is placed in engagement with said shoul- Specifieation of Letters latent. Application filed. March 10, 1921. .Serial No. 451,320.

ders 20 and 22 and such as will enable others skilled- Patented May 30,1922.

clamped in said position by mea'ns of a plate 25 and screws 26, the plate spannin the two arms 10 so as to bind the jaw 24. 'movable jaw 28 is also positioned against said shoulder 20 and is provided with an upwardly and rearwardly extending portion 128 which lies between the arms10 at the rear of the shoulders, 20. The extreme rear portion ofthe part 128 carries a pair of spaced ears 30 having projecting tongues extending laterally into guiding grooves 32 cut into the-opposing walls of said arms 10. A spring 34 is connected with the-top of the extension 128 of jaw 28 and with the arms 10 by means of a pin 31, this spring being provided for the purpose of elevatingthe jaw 281 The jaw is also provided with elevating means in the form of a toggle connection comprising a lower member 35 an upper member 36, as indicated at 38, said lower member 35 being pivotally connected with the upper end of the member 36 is pivoted, upon a pin 42 mounted in a pair of aligned sleeves 44 ec'centrically and 45 provided on the opposite sides. of the upper end of the member 36. The sleeve 44 may be integrally connected with a yoke 46 28, as indicated at 40. The

of the toggle.

and the sleeve 45 is carried bya plate 47 g which is bolted at 48 to the end of the yoke 46 opposite from the sleeve 44. The yoke 46 has an upwardly directed extension 146 in the form of a tubular housing which receives a locking pin 50, whose upper end is reduced toreceive thereabou'ta spring 54 which nor- I The mally urges the pin 50 downward. I upper reduced end 52.0f said pin 50 projects through the housing 146 at the top thereof and through an outer operating sleeve 55 to whichit is connected, By liftingthe sleeve 55 upward against the as indicated at 56.

tension of the spring 54, the pin 5Q may be withdrawn from one of the notches 58 in the top of the .head l2 'to permit swinging of the yoke 46in either direction, as indicated by the arrows in Fig. 1, so as to be' ad- I justed inanother of said notches, said sleeves 44 and 45 pivoting within thebore in the head 12. The head 12 is cut away on each side of the upper member 36 of the toggle,

as indicated at 43 in Figs. 1 and 4, to permit swinging of said toggle member.

For the purpose of operating the toggle to raise and lower the upper jaw 28, the

upper member 36 is provided with a laterof said link 62.

as shown at 70. The spaced jaws 65 provide between them a groove which receives the link 62, the bottom 67 of said groove constituting a stop-wall for the lower edge The centers of the pivoting points60, 65 and 68 are so arranged with relation to said stop-wall 67 that when the I handle 66 is swung to lowermost position,

as indicated in Fig. 6, the center of pivot 64 will lie below the dead center of the pivot at 66, so as to lock the link 62 in the posi- ;tionshown in Fig. 6 and hold the toggle members 35 and 36 in aligned position to retain the jaw 28 in its lowermost cableengaging position.

By raising the handle 66 to swing the pivot 64 upward and around pivot 68 to the left, the link 62 will urge the toggle member 36 toward the left so as to break the joint of 38 and permit the spring 34 to elevate the cable-engaging aw 28. This movement is sufficient to so separate the jaws 24 and 28 as to permit insertion of the cable C therebetween. Movement of the handle 66 downward will then draw the pivot 38 to the position shown in 1 so as to align the members 35 and 36 and force the jaw 28 into cable-clamping position. As shown in Fig. 1, the pivots 66, 65 and 68 are substantially in alignment, but the link is not yet in locked position, as it does not yet engage the lower wall 67 of the link-engaging groove, this position being also shown in Fig. 5. By further downward movement of the handle 66, the link 62 will be brought into engagement with said wall 67 bringing the pivot 64 beyond dead center, as above described, and thereby locking the link.

By lifting the pin and rotating the yoke'46 to the left in Fig. 1, the eccentric pin 42 will be lowered. This will reduce the space between the jaws 24 and 28 when in clamping position so as to engage a smaller cable. By swinging the yoke 46 to the right in Fig. 1, the eccentric pin 42 will be elevated so as to permit the clamping of a larger cable.

It will be noted from this construction that the handle 66 projects laterally from the casing 10 in the same direction in which the cable projects. By this construction,

- movable jaw may be adjusted.

said handle 66 and cable C aresubstantially in the same vertical plane so that said handle is in a large measure protected by the cable when the bucket towhich the grip is attached is in motion.

I claim:

1. An aerial tramway grip comprising a block, a pair of cable-engaging jaws on said block, one of said jaws being movable on the block, a toggle connected at one end with the movable block, and means to move the toggle to move the block, the other end of the toggle being pivoted on an adjustable pin whereby the clamping position of the 2. An aerial tramway grip comprising a block, a pair of cable-engaging jaws on said block, one of said jaws being movable on the block, a toggle connected at one end with the movable block, means to move the toggle to move the block, a pin on which the other end of the toggle is pivoted, and a rotary sleeve in which said pin is eccentrically mounted whereby rotation of the sleeve will produce adjustment of the clamping position of the movable jaw.

An aerial tramway grip comprising a block, a pair of cable-engaging jaws on said block, one of said jaws being movable on the block, a toggle connected at one end with the movable block, means to move the-toggle to move the block, and a handle pivoted on the block and connected with said toggle for moving the same to and from clamping position, said handle and the engaging portions of said jaws extending in the same general direction ,whereby said handle will extend in the same general. direction as a cable being gripped and'ithe cable will serve to guard the handle.

4. An aerial tramway grip comprising a block, a pair of cable-engaging jaws on said block, one of said jaws being movable on the block, a toggle connected at one end with the movable block, means to move the toggle to move the block, and a handle pivoted on the block and connected with said toggle forlmoving the same to and from clamping posltion, said handle and the engaging portions of said aws extending 111 the same general direction whereby said I handle will extendin the same general direction as a cable being gripped and the cable will serve' toguard the handle, there being a link connecting with the toggle and pivoted on the handle, whereby the link may be thrown past dead center by the handle to lock the toggle in clamping position.

In testimony whereof I afiix my signature.

nnvvann n. SAGKETT. 

